The Bossier banner. [volume] (Bellevue, Bossier Parish, La.) 1859-1952, 1887-09-15
SCIENCE AND INDUSTRY.
There are s1oo, 600, 600 invested :

lHcIc dIc p1oUsoUO,UOU FIHFtStcu III
the watch industry, in this country.
The canning and evaporating bust
ness is rapidly extending in the South.
The eggs Of single surgeons
counted by Frank Buckand, numbered
921, 600 and weighed forty-five pounds.
---Arkansa,o Traveller. so - a'sz'
Photographed the interior Of the
living eye were exhibited recently at a
meeting of the, Canadian Institute by
DIR. Rosebough, Of Toronto. One Of
them showed upon the retinas the in-
verted picture of the objects at which
the eye was looking.
"A French psychologist has been
endeavering by experiment to gain
light as to the effect of baths upon the
system. He finds that cold baths in
crease the demand of the system for
oxygen, and SO affect the action Of the
lungs as to double or treble the quantity
of air passing through them in a given
time.-M Y. Ledger. 80 -
-Anovel aid to instantaneous photog-
raphy has been devised by two Berlin
chemists, Il, consists of ar explosive
powder made of pulverized magnesium,
chlorate of potash and ,sulp4 4ide Of anti-
mony. When this is ignhed it will
illuminate the darkest room with a
flash lasting only one-fortieth of a
second, but long enough to obtain a
photograph of person or object in the
apartment
salt brine is used in Sheffield, Eng.
for hardening steel. says an exchange.
The mixture improves with age and
fuse, and to such an extent that its value
is largely increased. In some cases
these tanks are fifty years old, and
have value in proportion to their age.
It appears that the constant dipping Of
the hot metal into the same solution al
ters in some way its Frank
Leslie's Newspaper.
| The manufacture of rubies has
lately reached sucn perfection that the
artificial product is often more valua-
BILE than the natural stone. The pro-
cess employed is that of NJ. Frenzy,
who described it to the Paris Academy
of Science. Discarding method dis.
covered by him some years ago, he
now dissolyes alumnia in fluoride Of
calcium. and obtains red crystals OF
alumina, or perfect rubies, which may
be made Of large size.-FraaaE Leslie:
Newspaper. -
Starting on DIR. Dawson's 8 sassump-
ton that one foot of coal represents
fifty generations of coal plants. and
that each generation took ten years to
mature-a very moderate assumption
and taking the actually measured thick
ness of the coal measures in some 10
calities at II, 0Qpf fe ct, Prof. Huxley cal.
culates that the time represented by
the coal formation alone would be
| 5000, 600 years sufficient to show that
when we come to deal with geological
time the unit of measurement is 1,OOO,.
600 years.
/ "A curious effect Of the earthquake
in the north of Italy and south ol
France has recently come to the atten.
ton of medical circles in Paris. A
telegraph operator, who was sending q
message at the time of one Of the more
severe shocks, lost his consciousness.
and remained insensible for ten min.
u,es. On recovery he did not expert
ence any great suffering. but in the
course of two months symptoms o.
paralysis of the arm and face began te
manifest themselves, and his condition
4 has now become quite serious. 1t i.
supposed that he received a powerful
| shock Of earthquake electricity"
| N. 7. Led9cr.9 $50 as ae s